Datasheet

“main” (Installation and Administration) — 2004/6/25 — 13:29 — page 103 — #129
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YaST — Configuration
2.8.8 Profile Manager (SCPM)
Note
S/390, zSeries: Profile Manager
This module is not relevant for SUSE LINUX Enterprise Server
on IBM S/390 and zSeries.
Note
The SCPM (System Configuration Profile Management) module offers the
possibility of creating, managing, and switching among system configura-
tions. This is especially useful for mobile computers that are used in differ-
ent locations (in different networks) and by different users. Nevertheless,
this feature is useful even for stationary machines, as it enables the use of
various hardware components or test configurations. For more information
about SCPM basics and handling, refer to the respective sections in Chap-
ter 16 on page 329.
2.8.9 Runlevel Editor
SUSE LINUX can be operated in several runlevels. By default, the system
boots to runlevel 5, which offers multiuser mode, network access, and
the graphical user interface (X Window System). The other runlevels offer
multiuser mode with network but without X (runlevel 3), multiuser mode
without network (runlevel 2), single-user mode (runlevel 1 and S), system
halt (runlevel 0), and system reboot (runlevel 6).
The various runlevels are useful if problems are encountered in connection
with a particular service (X or network) in a higher runlevel. In this case,
the system can be booted to a lower runlevel to repair the service. Many
servers operate without a graphical user interface and must be booted in a
runlevel without X, such as runlevel 3.
Usually you only need the standard runlevel (5). However, if the graphical
user interface freezes at any time, you can restart the X Window system
by switching to a text console with
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Ctrl -
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Alt -
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F1 , logging in as root, and
switching to runlevel 3 with the command init 3. This shuts down your
X Window System, leaving you with a text console. To restart the graphical
system, enter init 5.
In a default installation, runlevel 5 is selected. To start a different runlevel
when the system is booted, change the default runlevel here. With ‘Run-
level properties’, determine which services are started in which runlevel.
103SUSE LINUX Enterprise Server